| 摘要 |
A cylindrical secondary battery including an electrode assembly including a positive electrode having a positive electrode active material layer containing lithium carbonate (Li2CO3), a negative electrode including a negative electrode active material layer, and a separator separating the positive electrode from the negative electrode, a can housing the electrode assembly, a cap assembly disposed on the can, and an electrolyte injected into the can. A content of the lithium carbonate (Li2CO3) is in the range of 1.0 to 1.5 wt % of the total weight of the positive electrode active material layer, a content of the electrolyte is in the range of 10.8 to 11.93 wt % of the total weight of a bare cell, and an operating pressure for interrupting current by the cap assembly is in the range of 7 to 9 kgf/cm2.
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